Classify the input using one of these labels: neutral, positive, and negative. @USAirways HA!  You're fun.
system
Classify the input using one of these labels: neutral, positive, and negative. @USAirways HA!  You're fun.
user
positive
assistant
system
Classify the input using one of these labels: neutral, positive, and negative. @USAirways HA!  You're fun.
user
neutral
assistant